Door-controlling means for elevators.



CIR

HIIENRY G. VOIGtI-Iflf, Oli NEW BttlTAN, CONNCTICUT, SSIGNR T0 THE AMERICIAN' STATES PAT l rrr cenni t HABWARE CRPRAT'IN, DEF NEW BR'ITA, CNNECTIECUT, A CORPRitLT-ION 0F ineon-eonfrnontme Means :een irreverent..

litatentefl ring. T2313, jltlitt..

appneation mea my e, wie. serial nu. 766,247'.

GONNECTGUT.

jhiltllglt., l ltiseccation of Letters Patent.

To all whom t may concern lle it known that'l, Hi'innr Gi-Volel-rr, e citizen ot' the United taters, residing' at Nerv llritain, Hartford county, State ol Connecticut, have invented certain new. `and ne'eiul improvements in Doo1'-Contrlling ll/le'ans for Elevators, et which the follow ing is a full, clear, and exactdeseription.

The present intention relates to n'ieans for controlling;r the power which. operates elevators and the like7l which means inay he operated by the niovelnent of an elevator well door to condition the power ineens so that the elevator may not be moved until the lmrticnlar doo;l opposite 'which'it happens to si and ie fully closed or substantially so.

To this endend in a broad senee my invention cons t;1 in providing an arin Inovable with the opening and closing oit' 'the door and arranged to operatea power controlling electric switch. This switch may operate either to alternately ineke and break the motor circuit ot an electric elevator may operate electric means controlling the `valve ol" a` hydraulic elevator. Theparticular specilie controlling means is immaterial as far as the purposes of the present invention are concerned. f

ln the following specilica'tion l ain' descrihing; in detail a preferred einlidiinentA of the invention, the preferred striltitre be ing illustrated in the accompanying (li-avi ings forming part ot the specification. y h

In' these drawings, lt-"igaireI 1 a fragmentary View in eleil'atio'n ci. ,an eleiiator Well door and casing, the `inerte being tiewed :troni the interior or lellefeter of the Well. llig. 2 is a View of the' pot/er con*- trollingparts showrihin Fig; 1 lont on anl enlarged' scale `and cons Vitil-ting a transverse vertical section on the line c-da of VFigl. Fig. `3 is a side elevation et t e `parte shown in Fig. 2 with e 'id parte inz he door closed position illstra' ed infiel. Fig. It

i is a View `similar tolig. Blot-1t Withfthe parts in the position theyoocnpy lwhen the door is opened. Fig. is afra'gmentay Vand vertical sectional View on the line -Z ot Fig. 6 is a detailot theretchet actuating' dogs. Fig. 7 is a fragmentary sectional View A -r'fittfI the door controlling mechanifsnf'lI in ein elevator.

ln Fig. 1 l ainillustrating a door con trolling arrangement providing; an arno which moves;A with the openii'lg andvclosing of the door.J rwhich arrn is utilized to operate a powercontrcllin'gswitch. The specific construction of .the door controlling parts forms no part of the present invention, but is described in detail in my prior Patent No. 1,041,705, dated October 15th. 1912, and in my pending application Serial No. 748,350.

Referring to the drawingal; la?? numerals, 1 indicates the sliding' door of en elevator Well.

2 is the door caeing and 3 the wall el' the elevator well constitutingd en alintnient etationary relatively to the sliding' door. To this abutment is secured a plate 4- Carrying adjacent its inner edge a ln'acltet 5 haring spaced arms 5 between 'which is pivoted the end of :i siringing ari having 'formed integrally therewith and adjacent its end, a transverse erin 7. This aiin 6 ie preferably termed as an :integral casting, and ia provided with a channel 8 in one iaee thereof and with elongated slots 9 therein at the hase otsaid channel. The lower end ot the transyerse arm is pivotaltiY connected to the piston 10 ot a power closer cylinder 1t. 12 designates atlatbar leavingr ite end seated in the channeled tace 8 of thearin (l ,and adjustably secured thereto hy ineens oi bolts 12, thisbar 12 forming with :the arni G one leifer ineinloer of a toggle lever, the other member of which comprisesthe lever 13 pivotally bc'oinieeted at ite rear end to the 'for- Walfil @11d 0f the bar 1.2 and having its torward end piroted to thedoor 1 adjacent its I forward edge, as at 11i. y15 designates an operting handle pivotally carried ln?, the tor- Warfi edge' ofthe door and coperatingi with a earn arn) 1G which enfrapgeaa nin 1?' carried-bythe lever lllD For e detailed de,-

seripti n the speeinc structure and opera tion o this form of door controlling' ineens, reference may `he had to my prior patent jan'd pendingr application aforesaid. lt will ,su'ii'ice for the purposes oi thepresent in- ,vention to state that the toggle, when the door is in *closed position, 1s straightened ynut with' its component levers in horizontal l l.' i i i i l lalinelnent to afford a dea-d center lock and :that when, with the door closed, the handle 15; is' linoved the operator, its earn arm 1G swings the Ato `giey leversv npwardly, break- 'ng' their horizontal allneinent and dead center lock and moving the door to opened position against the force of the power cylinder, the arm 6 swinging upwardly with the opening of the door, and when the handle is released, swinging downwardly as the force of the power cylinder through arm 7 returns the toggle levers and door to their original door closed positions.

I have utilized the swinging movement of the arm 6 to operate switch actuating mech-I anisrn, this operatinon being calculated to move the switch member a predetermined distance to make and brake the contact al ternately. I have found by experience that the rnake7 and break of this switch should'he quickly made in order to avoid burning out and I am, therefore, illus trating and describine" the power controlling switch as of the snap type.

The rear end of arm 6 is pivotally mounted between the arms 5a of the bracket 5 by means of a bolt 18 forming a rock sha/ft, to-

which holt or rock shaft the end of this arm is secured by means of a set screw., the rock shaft being' journaled in the arms 5 of bracket and having its end extending through and beingfflikewise journaled 'in spaced arms 9 or' et second bracket i9 in horizontal `alinementl with the first bracket 5, both of these brackets being secured to the plate it. rock arm 20 has one end seated on the rock shaft 18 between the spaced arms 198 et bracket 19, this rock arm being rigidly secured to the rock shaft by means of a set screw shown. `When the arm 6 moves up and down with the opening and closingl of the door, the arm 20 will oscillate hack and forth. This movement is utilized te the following switch actuating mecha LLism. A third bracket 2l is provided, suitably attached to the plate -l and having an oscillating disk 22 pivotally carried by its arm, this disk having an offset at one edge provided with a recess 23 therein and forming two arms between which a pin 24- carried hy rock arm 20 seats. rllhis disk 22 serves as a lever member and carries adjacent its edges at diametrically opposite points, ia; ehelgactuating pawls or pallets 25 and 26,

the latter being of greater length than the.

` former and having a ratchet actuating tooth 2GB' in its rear edge. Below the bracket 2l in substantial alinement therewith is another bracket 27 likewise secured to the'r plate 4 and having spaced arms 29 between 'which are mounted shafts 30 and 34 in horizontal alinement. The shaft 30 carries aiiixed thereto a ratchet wheel 31 in the same vertical plane with the pawls 25 and 26, this ratchet wheel being so positioned as to be engaged hy these driving pawls, as will he hereinafter seen. rhe shaft 30 also carries a toothed gear. 32 engaging with and operating a gear 33 carried by the shaft Se. The shaft beyond the outer arm 29 oi the Liesfiei bracket is enlarged as at 35 and extends outwardlvtoan electric switch 36 of the snap type, the wires extending from said switch to the elevator power being indicated at 37. The switch may be provided wzth any suitable supporting means as a braofet'. 3S which may he secured to the abutment el. switch 36 in the present instance ina)Y be of the type requiring two quarter turns to break and then make the circuit forming contact and the gears and 33 in such event would be in the ratio of two to one, it being intended that a one-eighth turn of the gear 32 is eiiected through the opening movement of the door, and another oneeighth turn by the closing' movement, thereby transmitting to the switch controlling shaft two quarter turns. A

l prefer to provide a friction brake 'for enH gagement with the periphery ol' the disk 22 and to this ond entend a spring arin 2* ..0 from the upper edge oi`I bracket arm to abut aga-inst the periphery of this disk.-

llso a' spring pawl 39 is provided, which )awl may he secured to the plate and civends 'to and cogerates with the ratchet wheel 31. lt is also preferable to provide in addition to the -friction brake 28, stop inc-ans tor limiting the reverse movement ot the disk 22, and to this end a piu 21a extends transversely from the bracket arm 2l, and the periphery of the disk has extended therefrom a pin 22 arranged to engage and be stopped hy the pin 21a at the end ot the normal reverse movement of dislY The arrangement of the driving pawls ratchet wheel 31, with the forward and re- Theverse oscillations oit' disk 22, successive rotatory impulses of equal length and also in the same direction so that the power switch operating shaft is given successive qua `r turn movements with the opening and closing oit the door. lt willbe evident that whe;l the door is opened, vthe rock arm 20, through its pin 24, will swing the disk forwardlyT from the position shown in Fig. 3 to that shown in F ig. es. This movement of the disk will move pawl 26 downwardlyy to give the .ratchet wheel 31 a one-eighth revolution and will retract the pawl 25 from its initial position a distance equal to another one-eighth turn of the ratchet wheel, so that when the door closes, the arm 20 will reverse v the directionV of movement o1" disk 22, movingI pawl 25 forwardly to turn the ratchet wheel 31 the required distance and 'retracting pawl 25 to position it for another for-- ward movement, when the door is again opened. The arrangement of thel disk 22 and the pawls and 26 therefore affords successive movement to Athe power switch shatth in the same direction ando'f suchl length as to snap the swit from the on l 'c tolthe od oosition and again Jfrom the prising' an elevator car and an elevator Weil door mounted for reciprocating movement, an electric circuit for controlling the movement of said car, said circuit including a rotary electric switch having circuit making` and breaking` positions operating' in said respective positions vto prevent and permit movement of the elevator car7 said circuit being' positioned adjacent said door and having,v an operating shaft, an arm connected to said door to move in opposite directions with the reciprocation of said door in opposite directions, and a pavvl and ratchet connection between said arm and said Switch ops veratiug sliaft,'said connections being' arranged to continuously rotate said shaft in the saine direction and to alternate circuit breaking and making positions With the snccessive and oppositely directed door-,opening and closingA movement-s ot said arm.

o. A dev-ice of the character described comprising an elevator car and an elevator well door mounted for. reciprocating,T movement, an electric circuit for controlling' the movement of said car, said circuit including a rotary electric switch having circuit making;` and breakinopositionsoperating in said respective positions to prevent and permit movement of the elevator cana pivot/ed arm connected With said door and swinging' in opposite directions with the opening and closin, ,1T of the door, and paivl and ratchet connections between said pivoted arm and said switch operatingvshaft arranged to continuously rot-ate said shaft in the saine direction with the successive and oppesita-lvv directed door opening and closing movements of said arm.

i 6. A device ot' the character described comprising an elevator car and an elevator Well door arranged for sliding reciprocating movement, an electric circuit for controlling the movement of said elevator car, said ein cuit includingl a rotary electric switch po sitioned adjacent said door, a rock shaft ad jacent said door, an arm operatively connected to said shaft and to said door to swing with the opening and closing movements of said door and tol thereby oscillate said shaft with the reciprocation of said door in opposite directions5 an operating shaft for said switch, and paWl and ratchet connections between said operating shaft and said rock shaft, said connections being arranged to continuously rotate said operating shaft in the same direction and into alternate circuit breaking; and making positions with the successive reciprocations of said arm in opposite directions, said switch being moved to circuit breakingr position upon door opening; movement of said arm to thereby block the movement of saidelevater car when said door is open.

nenni e. voionr.l

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